We calculate self-consistently in-plane superfluid density rho(parallel to)(s) in planar organic superconductors to]for three types of pairing symmetry: d(x2-y2), d(xy)-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate: the temperature dependence rho(parallel to)(s) (T) in K-(BEDT-TTF)(2)X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the "ground state" with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of d(x2-y2), and/or isotropic s-wave pairing with experirncntal results in more disordered "interniediate state" are discussed.
Keywords:
superfluid density / planar organic superconductors / order parameter symmetry
Source:
Physica C-Superconductivity and Its Applications, 2005, 432, 3-4, 140-146
TY - JOUR
AU - Dobrosavljevic-Grujic, L
AU - Jovanović, Vladimir
AU - Žikić, Radomir
PY - 2005
UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/148
AB - We calculate self-consistently in-plane superfluid density rho(parallel to)(s) in planar organic superconductors to]for three types of pairing symmetry: d(x2-y2), d(xy)-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate: the temperature dependence rho(parallel to)(s) (T) in K-(BEDT-TTF)(2)X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the "ground state" with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of d(x2-y2), and/or isotropic s-wave pairing with experirncntal results in more disordered "interniediate state" are discussed.
PB - Elsevier, Amsterdam
T2 - Physica C-Superconductivity and Its Applications
T1 - Superfluid density and pairing in planar organic superconductors
EP - 146
IS - 3-4
SP - 140
VL - 432
DO - 10.1016/j.physc.2005.07.020
ER -
@article{
author = "Dobrosavljevic-Grujic, L and Jovanović, Vladimir and Žikić, Radomir",
year = "2005",
abstract = "We calculate self-consistently in-plane superfluid density rho(parallel to)(s) in planar organic superconductors to]for three types of pairing symmetry: d(x2-y2), d(xy)-like and extended s-wave pairing. Assuming strong dimerization, we consider a single band model with elliptical Fermi surface to evaluate: the temperature dependence rho(parallel to)(s) (T) in K-(BEDT-TTF)(2)X compounds for those types of pairing. The obtained results, compared with measurements of the superfluid density in k-(BEDT-TTF)(2)Cu[N(CN)(2)]Br, strongly suggest that in these compounds the gap symmetry, influenced by cooling history, in the "ground state" with the least disorder is of the extended s-wave type. Possible physical reasons for agreement of d(x2-y2), and/or isotropic s-wave pairing with experirncntal results in more disordered "interniediate state" are discussed.",
publisher = "Elsevier, Amsterdam",
journal = "Physica C-Superconductivity and Its Applications",
title = "Superfluid density and pairing in planar organic superconductors",
pages = "146-140",
number = "3-4",
volume = "432",
doi = "10.1016/j.physc.2005.07.020"
}
Dobrosavljevic-Grujic, L., Jovanović, V.,& Žikić, R.. (2005). Superfluid density and pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications
Elsevier, Amsterdam., 432(3-4), 140-146.
https://doi.org/10.1016/j.physc.2005.07.020
Dobrosavljevic-Grujic L, Jovanović V, Žikić R. Superfluid density and pairing in planar organic superconductors. in Physica C-Superconductivity and Its Applications. 2005;432(3-4):140-146.
doi:10.1016/j.physc.2005.07.020 .
Dobrosavljevic-Grujic, L, Jovanović, Vladimir, Žikić, Radomir, "Superfluid density and pairing in planar organic superconductors" in Physica C-Superconductivity and Its Applications, 432, no. 3-4 (2005):140-146,
https://doi.org/10.1016/j.physc.2005.07.020 . .
